Brace yourselves, "The Vampire Diaries" fans. When the 100th episode airs this Thursday (Jan. 23), Kat Graham knows that fans are going to go crazy over certain shocking moments -- and she's not exaggerating.When Zap2it sat down with the resident witch of Mystic Falls turned supernatural anchor to The Other Side on set in Atlanta, Graham could barely contain her excitement over wanting to know how the fans are going to react to the milestone episode."I definitely think the fans are going to lose their minds," Graham tells Zap2it. "I think the fans are going to be in ecstasy when they watch it, and I don't think I've ever used that word. There are some things that happen in the 100th episode that are going to make a couple people stand on their couches and scream at their TV, 'Yes, yes, yes!' That's how I'll explain the 100th episode. I'm like, 'We're doing what,...